1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright 2004 by Peter Grehan. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifndef _MACHINE_TLS_H_
31#define _MACHINE_TLS_H_
32
33#include <sys/_tls_variant_i.h>
34
35#define TLS_DTV_OFFSET 0x8000
36#define TLS_TCB_ALIGN TLS_TCB_SIZE
37#define TLS_TP_OFFSET 0x7000
38
39static __inline void
40_tcb_set(struct tcb *tcb)
41{
42#ifdef __powerpc64__
43 __asm __volatile("mr 13,%0" ::
44 "r" ((uint8_t *)tcb + TLS_TP_OFFSET + TLS_TCB_SIZE));
45#else
46 __asm __volatile("mr 2,%0" ::
47 "r" ((uint8_t *)tcb + TLS_TP_OFFSET + TLS_TCB_SIZE));
48#endif
49}
50
51static __inline struct tcb *
52_tcb_get(void)
53{
54 struct tcb *tcb;
55
56#ifdef __powerpc64__
57 __asm __volatile("addi %0,13,%1" : "=r" (tcb) :
58 "i" (-(TLS_TP_OFFSET + TLS_TCB_SIZE)));
59#else
60 __asm __volatile("addi %0,2,%1" : "=r" (tcb) :
61 "i" (-(TLS_TP_OFFSET + TLS_TCB_SIZE)));
62#endif
63 return (tcb);
64}
65
66#endif /* !_MACHINE_TLS_H_ */